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Effect of RD Curing Agent on Curing Properties and Radon Shielding Performance of Uranium Tailings
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Gang CHEN, Yuhang GAN, Jianqiao KANG, Penghua HU
Uranium Mining and Metallurgy | 2023, 42(1) : 55 - 60
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Uranium Mining and Metallurgy | 2023, 42(1): 55-60
• SAFETY AND ENVIRONMENT PROTECTION •
Effect of RD Curing Agent on Curing Properties and Radon Shielding Performance of Uranium Tailings
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Gang CHEN, Yuhang GAN, Jianqiao KANG, Penghua HU
Affiliations
  • Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing 101149, China
Published: 2023-02-20 doi: 10.13426/j.cnki.yky.2022.06.03
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The uranium tailings from a uranium mine in Hebei province were cured with cement and RD curing agent commonly used in the market. The mechanical properties and radon shielding properties of curing test blocks were studied, and the calculation formula for the optimal radon shielding layer was derived. The weathe rability test of the shielding layer was also carried out, and the microscopic mechanism of the curing test blocks was analyzed. The results show that the optimal mass ratio of uranium tailings curing is 0.08% RD curing agent and 15% cement. Under the optimal ratio, the compressive strength of the curing test blocks can reach 3.0 MPa, and the radon exhalation rate is 0.39 Bq/(m2·s). When the thickness of the solidified layer is 10 cm, the radon exhalation rate on the surface of uranium tailings decreases by 81.2%, and the radon shielding effect is obvious. At the same time, the radon exhalation rate on the shielding layer surface did not fluctuate greatly in the artificial simulated environment test, and the stability is good.

uranium tailings  /  curing  /  compressive strength  /  radon shielding
陈刚, 干雨杭, 康剑翘, 胡鹏华. RD固化剂对铀尾渣固化体力学及氡屏蔽性能的影响研究. 铀矿冶, 2023 , 42 (1) : 55 -60 . DOI: 10.13426/j.cnki.yky.2022.06.03
Gang CHEN, Yuhang GAN, Jianqiao KANG, Penghua HU. Effect of RD Curing Agent on Curing Properties and Radon Shielding Performance of Uranium Tailings[J]. Uranium Mining and Metallurgy, 2023 , 42 (1) : 55 -60 . DOI: 10.13426/j.cnki.yky.2022.06.03
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Year 2023 volume 42 Issue 1
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doi: 10.13426/j.cnki.yky.2022.06.03
  • Receive Date：2022-06-24
  • Online Date：2026-10-23
  • Published：2023-02-20
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  • Received：2022-06-24
Affiliations
    Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing 101149, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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